File size: 2,883 Bytes
fea495a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | import fs from 'fs/promises';
import path from 'path';
import url from 'url';
import dataUriToBuffer from 'next/dist/compiled/data-uri-to-buffer';
function getSourceMapUrl(fileContents) {
const regex = /\/\/[#@] ?sourceMappingURL=([^\s'"]+)\s*$/gm;
let match = null;
for(;;){
let next = regex.exec(fileContents);
if (next == null) {
break;
}
match = next;
}
if (!(match && match[1])) {
return null;
}
return match[1].toString();
}
export async function getSourceMapFromFile(filename) {
filename = filename.startsWith('file://') ? url.fileURLToPath(filename) : filename;
let fileContents;
try {
fileContents = await fs.readFile(filename, 'utf-8');
} catch (error) {
throw Object.defineProperty(new Error(`Failed to read file contents of ${filename}.`, {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E466",
enumerable: false,
configurable: true
});
}
const sourceUrl = getSourceMapUrl(fileContents);
if (!sourceUrl) {
return undefined;
}
if (sourceUrl.startsWith('data:')) {
let buffer;
try {
buffer = dataUriToBuffer(sourceUrl);
} catch (error) {
throw Object.defineProperty(new Error(`Failed to parse source map URL for ${filename}.`, {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E199",
enumerable: false,
configurable: true
});
}
if (buffer.type !== 'application/json') {
throw Object.defineProperty(new Error(`Unknown source map type for ${filename}: ${buffer.typeFull}.`), "__NEXT_ERROR_CODE", {
value: "E113",
enumerable: false,
configurable: true
});
}
try {
return JSON.parse(buffer.toString());
} catch (error) {
throw Object.defineProperty(new Error(`Failed to parse source map for ${filename}.`, {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E318",
enumerable: false,
configurable: true
});
}
}
const sourceMapFilename = path.resolve(path.dirname(filename), decodeURIComponent(sourceUrl));
try {
const sourceMapContents = await fs.readFile(sourceMapFilename, 'utf-8');
return JSON.parse(sourceMapContents.toString());
} catch (error) {
throw Object.defineProperty(new Error(`Failed to parse source map ${sourceMapFilename}.`, {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E220",
enumerable: false,
configurable: true
});
}
}
//# sourceMappingURL=get-source-map-from-file.js.map |